EFFECTS OF PH, IONIC-STRENGTH, AND TYPE OF ANION ON THE RHEOLOGICAL PROPERTIES OF CHITOSAN SOLUTIONS

被引：36

作者：

CHEN, RH

LIN, WC

LIN, JH

机构：

[1] Department of Marine Food Science, National Taiwan Ocean University, Keelung

来源：

ACTA POLYMERICA | 1994年 / 45卷 / 01期

关键词：

D O I：

10.1002/actp.1994.010450108

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Changes in the rheological properties of chitosan solutions with pH, ionic strength, and type of anion were studied. Between pH 2.0 and 5.0, apparent viscosities increased with the decrease of pH in chitosan-organic acid solutions, while in chitosan-HCl solutions they behaved oppositely. In chitosan-NaOH solutions, they decreased with the increase of pH between pH 5.0 and 6.0, then increased as pH further increased to pH 6.0-6.4. The difference may be due to different interactions of counterions with macroions and also the third electroviscous effect. Relative viscosity increased with a decrease in chitosan concentrations at concentrations below 1.5 x 10(-3) M. Intrinsic viscosities changed with media pH and ionic strength.

引用

页码：41 / 46

页数：6

共 23 条

[1]

[Anonymous], 1977, POLYM RHEOLOGY

[2]

DOMSZY JG, 1985, MAKROMOL CHEM, V186, P1671

[3] Viscosity, plasticity, and diffusion as examples of absolute reaction rates [J].

Eyring, H .

JOURNAL OF CHEMICAL PHYSICS, 1936, 4 (04) :283-291

[4]

FILAR LJ, 1978, 1ST P INT C CHIT CHI

[5]

Gamzazade A. I., 1981, POLYM SCI USSR, V23, P665, DOI DOI 10.1016/0032-3950(81)90013-7

[6] DILUTE-SOLUTION BEHAVIOR OF A CATIONIC POLY-ELECTROLYTE [J].

KIENZLESTERZER, C ;

RODRIGUEZSANCHEZ, D ;

RHA, C .

JOURNAL OF APPLIED POLYMER SCIENCE, 1982, 27 (11) :4467-4470

[7]

KIENZLESTERZER CA, 1985, POLYM BULL, V13, P1

[8]

KIENZLESTERZER CA, 1986, CHITIN NATURE TECHNO

[9]

KNORR D, 1984, FOOD TECHNOL-CHICAGO, V38, P85

[10]

LAI SC, 1979, FOOD IND, V11, P23

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